Meet TCYM - That Chunky Yellow Mouse

At That Chunky Yellow Mouse (TCYM), we’re passionate about bringing the excitement of collecting to every fan — from casual players to hardcore collectors. We specialize in Pokémon, Lorcana, and One Piece TCG booster packs and boxes, offering authentic products imported from Japan, Korea, and English releases.


Born from a love of Pokémon and trading cards, TCYM started as a small collector’s project and quickly grew into a vibrant community of fans looking for quality, trust, and fun. Whether you’re hunting for rare cards, building your dream deck, or opening packs just for the thrill, we’re here to help you catch ‘em all.


We believe every order should feel like opening a present, so we pack each product with care — and a little bit of magic.


Join us on Instagram and TikTok (@thatchunkyyellowmouse) to follow our latest drops, unboxings, and huge giveaways!

Authentic Products, Always

Every product at That Chunky Yellow Mouse is carefully checked for authenticity before it reaches you. We never sell resealed or fake packs — just 100% genuine Pokémon, Lorcana, and One Piece TCG straight from trusted sources.

Sourced from Japan & Korea

We work directly with trusted sellers in Japan and Korea to bring you official international Pokémon and TCG products. This means early access to exclusive sets and the highest quality imports for collectors.

Packed with Care

Every order is packed securely and thoughtfully to protect your cards. Whether it’s a booster pack or a whole box, we treat every item like we’re shipping it to our own collection.